How do you tell the difference
#2
Super Moderator
iTrader: (2)
In general, the only visual way to tell is by the color, the graphite-filled parts will tend to be a bit lighter in color than the standard parts, so you'd see a wee bit more grey in them. But it's a pretty subtle difference, so it's not exactly easy to spot, unless you have a few of each sitting side by side....